HMS Audacious (S122)

HMS Audacious is the fourth Astute-class nuclear-powered fleet submarine of the Royal Navy. Several previous vessels of the Royal Navy have borne the name. She was formally named on 16 December 2016 and was launched on 28 April 2017. Audacious was stated to be handed over in January 2021. A parliamentary written answer stated that Audacious was commissioned on 3 April 2020, but her public ceremonial commissioning took place on 23 September 2021.

For other ships with the same name, see HMS Audacious.

Audacious under construction in Barrow-in-Furness in July 2013
History
United Kingdom
NameHMS Audacious
OrderedMay 2007
BuilderBAE Systems Submarine Solutions
Cost£1.492B (budget)
Laid down24 March 2009
Launched28 April 2017
Sponsored byLady Elizabeth Jones
Christened16 December 2016
Commissioned23 September 2021
In service24 September 2021
IdentificationPennant number: S122
StatusIn active service
Badge
General characteristics
Class and typeAstute-class fleet submarine
Displacement
  • Surfaced: 7,000 to 7,400 t (6,900 to 7,300 long tons)
  • Submerged: 7,400 to 7,800 t (7,300 to 7,700 long tons)
Length97 m (318 ft 3 in)
Beam11.3 m (37 ft 1 in)
Draught10 m (32 ft 10 in)
Propulsion
  • 1 × Rolls-Royce PWR 2 nuclear reactor, HEU 93.5%
  • MTU 600 kilowatt diesel generators
Speed30 kn (56 km/h; 35 mph), submerged
RangeUnlimited
Endurance90 days
Test depthOver 300 m (984 ft 3 in)
Complement98 (capacity for 109)
Sensors and
processing systems
  • Thales Sonar 2076
  • Atlas DESO 25 echosounder
  • 2 × Thales CM010 optronic masts
  • Raytheon Successor IFF
Armament
  • 6 × 21 in (533 mm) torpedo tubes with stowage for up to 38 weapons:
    • Tomahawk Block IV cruise missiles
    • Spearfish heavyweight torpedoes
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